Cita APA (7a ed.)

Helal, A. H. (1995). Impulse fur Bibliotheken (Impulses for Libraries). Publications of Essen University Library 19.

Cita Chicago Style (17a ed.)

Helal, Ahmed H. Impulse Fur Bibliotheken (Impulses for Libraries). Publications of Essen University Library 19. 1995.

Cita MLA (9a ed.)

Helal, Ahmed H. Impulse Fur Bibliotheken (Impulses for Libraries). Publications of Essen University Library 19. 1995.